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Base station, mobile station, reference signal transmission method, and channel quality measurement method

  • US 10,425,852 B2
  • Filed: 08/22/2014
  • Issued: 09/24/2019
  • Est. Priority Date: 09/26/2013
  • Status: Active Grant
First Claim
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1. A base station comprising:

  • a processor that communicates, to a mobile station, an index representing a first mapping of reference signals for measuring channel state information of a more than a predetermined number of antenna ports, the first mapping being configured by combining second mappings of the reference signals for measuring the channel state information, each of the second mappings being defined for the predetermined number or less antenna ports;

    a multiplexer configured to multiplex the reference signals for measuring the channel state information in one or more resource elements in accordance with the first mapping; and

    a transmitter configured to transmit the reference signals for measuring the channel state information,wherein, in the one or more resource elements in which the reference signals for measuring the channel state information of the more than the predetermined number of antenna ports is multiplexed, a reference signal for measuring the channel state information of each antenna port number is mapped to a position determined in accordance with a predetermined rule.

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